( Reaffirmed 2000 ) IS:10601-1983 Indian Standard DIMENSIONS FOR TERMINALS .OF HIGH VOLTAGE SWITCHGEAR AMD CONTROLGEAR `+ High Voltage Switchgear and Controlgear ETDC 58 The Ahmedabad Sectional Committee, Chuirman Representing Electricity Co Ltd, Ahmadabad SHRI H. M. PAI Members M. B. BAHULKAR (Alternate to Shri H. M. Pai ) Tata Hydro-Electric Power Supply Co Ltd, Bombay SHRI R. CHANDRAYOULI S~PTC. BALIGA ( Alternafe ) Calcutta Electric Supply Corporation Ltd, Calcutta CHIEFENGINEER SHRI T. K. GHOSE ( Allernate ) Central Power Research Institute, Bangalore DIRECTOR JO.NTDIRECTOR, STDS (Alternate) SENIOR DEPUTY DIRECTOR ( Allernare ) Draac~oa, SUB-STATION DIRECTO- Central Electricity Authority, New Delhi RATE DIRECTOR, SUBDEPUTY STATION ( Alternate ) Rural Electrification Corpn Ltd, New Delhi SHRI G. L. DUA SHRI S. C. KHURANA ( Alternate ) ASEA Ltd, Nasik SHRI B. V. ESWAR SHRI S. SUBRA~ANIAN ( Afternate ) Directorate General of Supplies and Disposals, SHRI K. L. GARB New Delhi SHRI R. V. NAIZAYANAN ( Alternate ) Bharat Heavy Electricah Ltd, Hyderabad SHRI B. N. GHOSH SHRI A. RAJA RAO ( Alternate ) SHRT D. K. SINGLE (Alternate) Bombay Electric Supply and Transport Undertaking, SHRI Y. R. GODSE Bombay SRRI D. SWAMINATHAN (Alternate) SHRI ( Continued on page 2 ) 7 INDIAN @ Cobyright 1983 STANDARDS INSTITUTION This publication is protected under the Indian Copyright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act. IS : 10601- 1983 ( Continued from pup 1 ) Representing Members Kirloskar-Asea Ltd, Bangalore SHRIJAYANT N. GURJAR Maharashtra State.Electricity Board, Bombay SHRI P. D. JAEAGIRDAR SRRI JAVEED A~IED NGEF Ltd, Bangalore SHRI K. P. SARATHY ( Alternate ) SHRI P. M. JOS~H Aluminium Industries Ltd, Kundara SRRI C. M. A. NAYAR ( Alternate ) SHRI G. K. KHEMANI Central Public Works Department, New Delhi SURVEYOR OF WORKS III ( Alternate ) SHRIB.N. KISHORE Crompton Greaves Ltd, Bombay SHRI A. N. VENUGOPAL ( Alternate ) Hindustan Brown Boveri Ltd, Vadodara SRRI V. S. MANI SHRI S. R. POTNIS ( Alternate ) Tara Consulting Engineers, Bombay SHRI S. G. MENON SHRI C. S. KUMAR ( Alternate ) National Test House, Calcutta SHRI S. K. MUKHERJEE SHRI P. C. PRADHAN ( Alternate ) Mysore Electrical Industries, Bangalore SRRI B. S. NARASIMHAN SHRI R. SATYANARAYANA SRARMA ( Alternate ) Joyti Limited, Vadodara SHRI J. S. NEOI SHRI R. M. NANAVATI ( Alternate ) Siemens India Ltd, Bombay SRRI S. G. NXNE SHRI T. C. NEELAKANTAN ( Alternate ) Delhi Electric Supply Undertaking, New Delhi SRRI A. S. PINTO SHRI 0. P. ANAND ( Alternate ) Tamil Nadu Electricity Board, Madras THIRU T. E. B. SAMUEL THIRU T. SHEMBAHARAJAN ( Alternate ) Indian Institute of Technology, New Delhi REPRESENTATIVE Research Design & Standards Organization, R~RESENTATIVE Lucknow Director General, IS1 ( Ex-ojicio Member ) SHRI S. P. SACHDEV, Director ( Elec tech ) Secretary SHRI K. GANESH Assistant Director ( Elec tech ), IS1 c 2 IS:10601-1983 Indian Standard DIMENSIONS FOR TERMINALS OF HIGH VOLTAGE SWITCHGEAR AND CONTROLGEAR 0. 0.1 This FOREWORD Indian Standard was adopted by the Indian Standards Institution on 28June 1983, after the draft finalized by the High Voltage Switchgear and Controlgear Sectional Committee had been approved by the Electrotechnical Division Council. 2.0 Dimensional standardization of terminals of high voltage switchgear and controlgear had been carried out in several countries proving to be Dimensional standardization at the a useful tool in interchangeability. international level had been taken up with a view to catering to both copper and aluminium terminal designs, taking into account the different types of constructional features in vogue., It concerns the kinds of appa: ratus that are subjected to international trade. 0.3 Aluminium is voltage switchgear on choice of alloys design. Different threaded type and frequently used in the terminals of both high and low The dimensions of terminals depend in the country. and mechanical loadings, changing from design to types of terminals are also in use, namely, palm type, plain clamp type. 0.4 In order to circumvent the difficulties of interchangeability and to facilitate export, as a first step towards total dimensional standardization, it has been found acceptable to cover recommended dimensions of terminals without any correlation with rated voltage, rated normal current or application of the equipment. 0.5 For the time being, the dimensions are restricted to the diameters and the distances between holes in the case of terminals with rectangular shape and diameters and lengths in the case of terminals with cylindrical shape. This standard also does not recommend the use of any particular type of material for terminals. 0.6 In the preparation of this standard, considerable assistance has been derived from IEC Pub 5 18( 1975 ) ` D imensional standardization of terminals of high voltage switchgear and controlgear ' issued by the 3 IS: 10601-1983 International Electrotechnical Commission. However, to cover local needs, 18 mm size has been added as an additional size of hole diameter for terminals with rectangular shape. 0.7 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test, shall be rounded off in accordance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. 1. SCOPE 1.1 This standard covers dimensions for terminals of high voltage switchsuch as circuit-breakers, disconnectors and gear and controlgear, switches. The application of this standard is however not excluding other HV switchgear equipment. 1.2 The terminals conforming to the dimensions given in this standard can be made of any suitable material and no coordination between the dimensions and the rated normal current is being given. 2. TERMINALS WITH d L CYLINDRICAL 20 80 30 80 SHAPE ( see also Fig. 1 ): 40 125 60 (mm) 125 (mm) 30 125 2.1 The following dimensions are recommended Diameter Corresponding 2 ! ! -FIG. 1 I L_+_L__ TERMINALS WITH CYLINDRICAL SHAPE *Rulesfor rounding off numerical values( revised ). 4 IS:10601-1983 3. TERMINALS WlTH RECTANGULAR SHAPE be 3.1 The recommended dimensions for rectangular terminals shall restricted to the diameters of and the distances between the holes. The dimensions are : Hole diameters : Distance between holes : ( centre to centre ) Any possible combination 14 mm, 18 mm `and 22 mm 40 mm, 45 mm, 50 mm and 60 mm of these dimensions is permitted. holes, both The distance between holes shall apply to two adjacent along the abscissa and the ordinate. .5 INDIAN ON HIGH IS: 375-1963 1818-1972 1885 ( Part 2032 ( Part 2516 ( Part 2516 ( Part STANDARDS VOLTAGE SWITCHGEAR AND CONTROLGEAR Marking and arrangements for switchgear busbars, main connections and auxiliary wiring ( revised) Alternating current isolators ( disconnectors ) and earthing switches (fitst revision ) 17 )-1979 Electrotechnical vocabulary: Part 17 Switchgear and controlgear (.fifJt revis+z ) 7 )-1974 Graphical symbols used in. electrotechnology: Part 7 Switchgear and auxiliaries ( jirst revision ) l/Set 2 )-I980 Circuit breakers: Part 1 General and definitions, Set 2 For voltages above 1 000 V ac 2/S,e;`20);1tf0 Circuit breakers: Part 2 Rating, Set 2 For voltages above 2516 ( Part J/Set 2 )-1980 Circuit breakers: Part 3 Design and construction, Set 2 For voltages above 1 000 V ac 2516 ( Part 4/Set 2 )-1980 Circuit breakers: Part 4 Type tests and routine tests, Set 2 For voltages above 1 000 V ac 2516 ( Part 5/Set 2 )-1980 Circuit breakers: Part 5 Information to be given with tenders and orders and rules for transport, erection enquiries, and maintenance, Set 2 For voltages above 1 000 V ac Metal-enclosed switchgear and controlgear for voltages above 1 000 V but 3427-1969 not exceeding 11 006 V Switches and switch isolators above 1 000 V but not exceeding 11 000 V 4710-1968 Electric power connectors 5561.1970 Automatic reclosing circuit breakers (automatic circuit reclosers ) for ac 7567-1975 distribution system Intercoonecting busbars for ac voltage above 1 kV up to and including 8084-1976 ac contactors of voltage above 1 000 V up to and including 11 000 V Guide for testing of circuit breakers with respect to out-of-phase switching 1 )-1979 High voltage fuses: Part 1 Current limited fuses 2 )-1980 High voltage fuses: Part 2 Expulsion and similar fuses 3 )-1980 High voltage fuses: Part 3 Application guide for high voltage P ruses 9407-1980 High voltage fuses for the external protection of shunt power capacitors ____ _. :Part 1 )-1981 Alternating current switches for voltages above 1 000 V: Part 1 9920 ( General and definitions 9920 ( \ Part 2 )-I982 Alternating current switches for voltages above 1 000 V: Part 2 fiating 9920 ( Part 3 )-1982 Alternating current switches for voltages above 1 000 V: Part 3 Design and construction current disconmctors ( isolators ) and earthing 9921 ( Part 1 )-1981 Alternating Part 1 General and definitions switches for voltages above 1 000 V: current disconnectors ( isolators ) and earthing 9921 ( Part 2 )-I982 Alternating switching for voltages above 1 000 V: Part 2 Rating 9921 ( Part 3 )-I982 Alternating current disconnectors ( isolators ) and earthing Part 3 Design and construction switches for voltage above 1 000 V: and maintenance of 10118 ( Part 1 )-1982 Code of practice for selection, installation switchgear and controlgear: Part 1 General maintenance installation and maintenance of 19118 ( Part 3 )-1982 Code of practice for selection, switchgear and controlgear: Part 3 Installation installation and maintenance of 10118 ( Part 4 )-1982 Code of practice for selection Part 4 Maintenance switchgear and controlgear: 9046-1978 9135.1979 9385 ( Part 9385 ( Part 9385 ( Part . _"- -_